CVE-2026-65438 HIGH

CVE-2026-65438: WordPress Message Filter for Contact Form 7 plugin <= 1.6.3.9 - Cross Site Scripting (XSS) vulnerability

Vendor Kofi Mokome
Product Message Filter for Contact Form 7
Weakness CWE-79 · XSS
Published July 27, 2026
Last update July 28, 2026
View on NVD All CVEs

CVSS base score

7.1/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

What the vulnerability does

01Description

Unauthenticated Cross Site Scripting (XSS) in Message Filter for Contact Form 7 <= 1.6.3.9 versions.

Explanation of Vulnerability in Simple Terms

02Summary

Message Filter for Contact Form 7 through version 1.6.3.9 contains a cross-site scripting (XSS) vulnerability. An attacker can inject malicious scripts that execute in the browsers of site visitors or administrators. The vulnerability requires user interaction—typically clicking a malicious link or visiting a crafted page. The impact extends beyond the plugin itself to affect the broader site.

What an attacker can do

03Attacker Capabilities

Inject malicious scripts that run in visitors' browsers, potentially stealing session tokens or redirecting users.

Potential impact on your site

04Site Impact

Visitors and admins could be redirected, have credentials stolen, or see defaced content without your knowledge.

Conditions required to exploit

05Prerequisites

No authentication required. Victim must click a link or visit a page containing the malicious payload.

Key dates

06Disclosure timeline

July 27, 2026 CVE published
July 28, 2026 Record updated

Related vulnerabilities

08Related CVE

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